Bug#785460: (no subject)

2015-06-25 Thread Robert Lange
The brightness is saved across reboots when using the kernel provided by
package linux-image-4.0.0-2-amd64, which is currently in unstable.
Unfortunately, due to other regressions, I was forced back to
linux-image-3.16.0-4-amd64, which is currently in testing, and now
brightness is not saved across reboots.


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Bug#785460: (no subject)

2015-05-16 Thread Robert Lange
When I set the brightness manually, I run the following and see:

$ ls -1 /sys/class/backlight/*/*brightness | xargs -I % sh -c "echo % ;
cat %"

/sys/class/backlight/intel_backlight/actual_brightness
2219
/sys/class/backlight/intel_backlight/brightness
2219
/sys/class/backlight/intel_backlight/max_brightness
4438

However, when I logout and log back in (or reboot) and run the command,
I see:

$ ls -1 /sys/class/backlight/*/*brightness | xargs -I % sh -c "echo % ;
cat %"

/sys/class/backlight/intel_backlight/actual_brightness
4438
/sys/class/backlight/intel_backlight/brightness
4438
/sys/class/backlight/intel_backlight/max_brightness
4438

There is a systemd file which apparently stores the brightness for
restoration during reboot.

$ cat
/var/lib/systemd/backlight/pci-\:00\:02.0\:backlight\:intel_backlight
4438

I tried manually editing the file to 2219, but upon logout and login or
reboot, the brightness was still restored to maximum and the file was
restored to 4438.


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